1/10 of 9 is 0.9. 0.99 is 1/10 larger (/100, x110%). So 9 would be in the hundredths position
decimal
3.9
To round 13.09 to the nearest tenth, we look at the digit in the hundredths place, which is 0. Since 0 is less than 5, we keep the digit in the tenths place the same. Therefore, 13.09 rounded to the nearest tenth is 13.1.
To round 0.6666667 to the nearest tenth, you look at the digit in the hundredths place, which is 6. Since this digit is 5 or greater, you round up the tenths place from 6 to 7. Therefore, 0.6666667 rounded to the nearest tenth is 0.7.
one tenth
decimal
32.6
3.9
22.4
18.8
40.8
8.1
To round 29.4 to the nearest tenth, we look at the digit in the hundredths place, which is 4. Since 4 is less than 5, we keep the digit in the tenths place the same, resulting in 29.4 rounded to the nearest tenth.
45.3
29.1
36.7
To round 13.09 to the nearest tenth, we look at the digit in the hundredths place, which is 0. Since 0 is less than 5, we keep the digit in the tenths place the same. Therefore, 13.09 rounded to the nearest tenth is 13.1.